/Engine/Plugins/Online/OnlineSubsystemUtils/Source/OnlineSubsystemUtils/Public/PartyBeaconClient.h
Types of reservation requests that can be made by this beacon
enum EClientRequestType { NonePending, ExistingSessionReservation, ReservationUpdate, EmptyServerReservation, Reconnect, Abandon, ReservationRemoveMembers, AddOrUpdateReservation, }